Android terminal Linux backup

backup.sh

#!/bin/bash

# --- Configuration ---
BACKUP_DIR="/mnt/shared/linux"
HOME_DIR="/home/droid"
DATE=$(date +%Y-%m-%d-%H-%M-%S)
BACKUP_FILE="$BACKUP_DIR/backup-$DATE.tar.gz"
PACKAGE_LIST="$BACKUP_DIR/packages-$DATE.txt"
REPO_LIST="$BACKUP_DIR/repositories-$DATE.list"

# --- Check for Backup Directory ---
if [ ! -d "$BACKUP_DIR" ]; then
  echo "Error: Backup directory '$BACKUP_DIR' does not exist."
  exit 1
fi

# --- Back Up Home Directory ---
echo "Backing up home directory to '$BACKUP_FILE'..."
tar -czvf "$BACKUP_FILE" "$HOME_DIR" --exclude="$HOME_DIR/.cache" 2>>"$BACKUP_DIR/backup_errors.log"
if [ $? -ne 0 ]; then
    echo "Error detected during home backup."
    exit 1
fi
echo "Home directory backup complete."

# --- Export Package List ---
echo "Exporting package list to '$PACKAGE_LIST'..."
dpkg --get-selections | grep -v deinstall > "$PACKAGE_LIST"
echo "Package list exported."

# --- Export APT Repository Information ---
echo "Exporting repository list to '$REPO_LIST'..."
cp /etc/apt/sources.list "$REPO_LIST"
for f in /etc/apt/sources.list.d/*.list; do
    echo "" >> "$REPO_LIST"
    echo "# Source: $f" >> "$REPO_LIST"
    cat "$f" >> "$REPO_LIST"
done
echo "Repository information exported."

echo "Backup process complete."